1
answer
0
watching
306
views
3 Nov 2019
Item 19 Part A What is the rate law for the following mechanism in terms of the overall rate constant k? A reaction mechanism is defined as the sequence of reaction steps that dofine the pathway from reactants to products. Each stop in a mechanism is an elenentary reaction, which describes a single molecular event of usually one or two molecules interacting Step1: A BC (fast) Step2: B+C â D (slow) Express your answer in terms of k and the necessary concentrations (e.g. k*tA]-31 IDJ). The rato law for an overal roaction is the rate law for the alowost stop in the mechanism, which is directly relaled to the stoichiometric coelfcients of the reactants Hints The exception to this rule occurs when the sowest step contains intermediates. In these cases, the slowest step is usually preceded by an equilbrium stop, which can be usod to subaituto for the intormodiatos in the overal rale law Submit My Answers Give Up Part B Consider the reaction which has rate law of rate = ìX2Ylzj Select a possible mechanism for the reaction Hints Step1: Step2: Step3: Z2>Z+Z(slow) X-Y+ZâX-YZ (fast) X2Y+ZâX2YZ (fast) Step:XYi^X2YZ+Z (slow) Step 2 : X2Y+ZâX2YZ (fast) Step 1 : Step2: X2Y+Z2âX2YZ2 X2YZz_-X2Y2+Z (slow) (fast) Step1: 2X2Y X4Y2 (fast) Step 2: X4Y2+Z2-2X2YZ (slow) OEStep1 2XY Z22^YZ (slow) Submit My Answers Give Up Provide Feedback
Item 19 Part A What is the rate law for the following mechanism in terms of the overall rate constant k? A reaction mechanism is defined as the sequence of reaction steps that dofine the pathway from reactants to products. Each stop in a mechanism is an elenentary reaction, which describes a single molecular event of usually one or two molecules interacting Step1: A BC (fast) Step2: B+C â D (slow) Express your answer in terms of k and the necessary concentrations (e.g. k*tA]-31 IDJ). The rato law for an overal roaction is the rate law for the alowost stop in the mechanism, which is directly relaled to the stoichiometric coelfcients of the reactants Hints The exception to this rule occurs when the sowest step contains intermediates. In these cases, the slowest step is usually preceded by an equilbrium stop, which can be usod to subaituto for the intormodiatos in the overal rale law Submit My Answers Give Up Part B Consider the reaction which has rate law of rate = ìX2Ylzj Select a possible mechanism for the reaction Hints Step1: Step2: Step3: Z2>Z+Z(slow) X-Y+ZâX-YZ (fast) X2Y+ZâX2YZ (fast) Step:XYi^X2YZ+Z (slow) Step 2 : X2Y+ZâX2YZ (fast) Step 1 : Step2: X2Y+Z2âX2YZ2 X2YZz_-X2Y2+Z (slow) (fast) Step1: 2X2Y X4Y2 (fast) Step 2: X4Y2+Z2-2X2YZ (slow) OEStep1 2XY Z22^YZ (slow) Submit My Answers Give Up Provide Feedback
Bunny GreenfelderLv2
21 Apr 2020